Okay, I see this on the Doepfer DIY page: "Especially for the first A-100 VCFs and VCAs (A-120, A-121, A-122 and first versions of A-130, A-131) the audio inputs have been designed to avoid distortion with standard A-100 signals (e.g. VCO). Lowering the input resistors will allow distortion for these moduls too." So can I solder a 100k-Ohm resister in parallel with the input resistor to boost the input level? More crucially for me as someone who can't read a circuit board, which one would that be? thanks! Ernst --- In Doepfer_a100@yahoogroups.com, "E Karel" <eklkrl@...> wrote: > > Hello, > > I've noticed this too about the A-121. There is information elsewhere about modifying an A-120 for increased input gain; would it be straightforward to modify the A-121 to get more gain as well? > > Has anyone done this? > > Ernst > > > --- In Doepfer_a100@yahoogroups.com, "Michael Wagner" <michael.wgnr@> wrote: > > > > Ever since I own an A-121, I suspected, that its output is quite low > > in comparison to the plain oscillator output level. Yesterday I made a > > comparison between the A-121 and the A-105, that I received recently. > > I routed a sawtooth from the A-111 to both of their inputs. I tweaked > > the Input attenuator of both filters so, that the levels are just at > > the point before the input signals are distorted by the filter. The > > filters were both fully opened without any modulation or resonance. I > > normalled the A-105 output to 0db deviation from line level in my > > little mixer and then checked the output level of the A-121, which > > seemed to be around 20db lower in output. Is this the normal behaviour > > of this filter? > > > > Thank you for any assistance in this, > > -Michael > > >
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Re: A-121 Output Level
2011-09-03 by E Karel
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